./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:07:42,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:07:42,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:07:42,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:07:42,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:07:42,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:07:42,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:07:42,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:07:42,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:07:42,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:07:42,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:07:42,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:07:42,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:07:42,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:07:42,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:07:42,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:07:42,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:07:42,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:07:42,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:07:42,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:07:42,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:07:42,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:07:42,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:07:42,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:07:42,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:07:42,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:07:42,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:07:42,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:07:42,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:07:42,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:07:42,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:07:42,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:07:42,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:07:42,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:07:42,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:07:42,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:07:42,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:07:42,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:07:42,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:07:42,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:07:42,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:07:42,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:07:42,610 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:07:42,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:07:42,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:07:42,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:07:42,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:07:42,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:07:42,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:07:42,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:07:42,614 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:07:42,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:07:42,615 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:07:42,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:07:42,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:07:42,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:07:42,617 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:07:42,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:07:42,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:07:42,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:07:42,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:07:42,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:07:42,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:07:42,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:07:42,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:07:42,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:07:42,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:07:42,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:07:42,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:07:42,619 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:07:42,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:07:42,620 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:07:42,620 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:07:42,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:07:42,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:07:42,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:07:42,961 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:07:42,961 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:07:42,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-09-01 14:07:44,294 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:07:44,475 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:07:44,475 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-09-01 14:07:44,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cea8fb1c/0519ae7bed4843ee9b89a634b879dbb3/FLAG6d42e0ab7 [2023-09-01 14:07:44,491 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cea8fb1c/0519ae7bed4843ee9b89a634b879dbb3 [2023-09-01 14:07:44,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:07:44,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:07:44,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:07:44,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:07:44,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:07:44,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304a1e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44, skipping insertion in model container [2023-09-01 14:07:44,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:07:44,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:07:44,663 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-09-01 14:07:44,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:07:44,678 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:07:44,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-09-01 14:07:44,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:07:44,715 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:07:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44 WrapperNode [2023-09-01 14:07:44,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:07:44,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:07:44,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:07:44,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:07:44,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,777 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2023-09-01 14:07:44,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:07:44,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:07:44,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:07:44,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:07:44,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:07:44,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:07:44,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:07:44,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:07:44,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (1/1) ... [2023-09-01 14:07:44,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:07:44,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:44,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:07:44,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:07:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:07:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:07:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:07:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:07:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:07:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:07:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:07:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:07:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:07:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:07:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 14:07:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:07:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:07:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:07:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:07:44,938 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:07:45,101 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:07:45,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:07:45,372 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:07:45,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:07:45,380 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 14:07:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:07:45 BoogieIcfgContainer [2023-09-01 14:07:45,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:07:45,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:07:45,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:07:45,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:07:45,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:07:44" (1/3) ... [2023-09-01 14:07:45,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac05eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:07:45, skipping insertion in model container [2023-09-01 14:07:45,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:07:44" (2/3) ... [2023-09-01 14:07:45,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ac05eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:07:45, skipping insertion in model container [2023-09-01 14:07:45,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:07:45" (3/3) ... [2023-09-01 14:07:45,388 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-09-01 14:07:45,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:07:45,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:07:45,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:07:45,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:07:45,505 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 14:07:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 374 flow [2023-09-01 14:07:45,681 INFO L130 PetriNetUnfolder]: 15/172 cut-off events. [2023-09-01 14:07:45,681 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:07:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 15/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-09-01 14:07:45,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 175 transitions, 374 flow [2023-09-01 14:07:45,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 162 transitions, 342 flow [2023-09-01 14:07:45,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:07:45,718 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 162 transitions, 342 flow [2023-09-01 14:07:45,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 162 transitions, 342 flow [2023-09-01 14:07:45,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 162 transitions, 342 flow [2023-09-01 14:07:45,769 INFO L130 PetriNetUnfolder]: 15/162 cut-off events. [2023-09-01 14:07:45,769 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:07:45,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 15/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-09-01 14:07:45,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-09-01 14:07:50,972 INFO L134 LiptonReduction]: Checked pairs total: 4092 [2023-09-01 14:07:50,972 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-09-01 14:07:50,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:07:50,988 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56be5088, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:07:50,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 14:07:50,993 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-09-01 14:07:50,994 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:07:50,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:50,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:50,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:50,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1548535715, now seen corresponding path program 1 times [2023-09-01 14:07:51,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748430491] [2023-09-01 14:07:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:51,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748430491] [2023-09-01 14:07:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748430491] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:07:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:07:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:07:51,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479390528] [2023-09-01 14:07:51,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:07:51,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:07:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:07:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:07:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 341 [2023-09-01 14:07:51,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:51,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:51,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 341 [2023-09-01 14:07:51,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:51,786 INFO L130 PetriNetUnfolder]: 543/714 cut-off events. [2023-09-01 14:07:51,787 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-09-01 14:07:51,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 714 events. 543/714 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2207 event pairs, 212 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 1213. Up to 697 conditions per place. [2023-09-01 14:07:51,795 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-09-01 14:07:51,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 128 flow [2023-09-01 14:07:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:07:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:07:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-09-01 14:07:51,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809384164222874 [2023-09-01 14:07:51,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-09-01 14:07:51,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-09-01 14:07:51,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:51,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-09-01 14:07:51,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:51,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:51,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:51,839 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 492 transitions. [2023-09-01 14:07:51,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 128 flow [2023-09-01 14:07:51,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 14:07:51,846 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-09-01 14:07:51,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-09-01 14:07:51,851 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-09-01 14:07:51,851 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-09-01 14:07:51,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:51,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:51,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:51,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:07:51,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:51,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2004951010, now seen corresponding path program 1 times [2023-09-01 14:07:51,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:51,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093174885] [2023-09-01 14:07:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:51,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:52,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:52,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093174885] [2023-09-01 14:07:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093174885] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:07:52,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:07:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:07:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050327348] [2023-09-01 14:07:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:07:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:07:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:07:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:07:52,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 341 [2023-09-01 14:07:52,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:52,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:52,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 341 [2023-09-01 14:07:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:52,452 INFO L130 PetriNetUnfolder]: 753/1008 cut-off events. [2023-09-01 14:07:52,452 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 14:07:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1008 events. 753/1008 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3502 event pairs, 95 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 2032. Up to 825 conditions per place. [2023-09-01 14:07:52,457 INFO L137 encePairwiseOnDemand]: 334/341 looper letters, 39 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-09-01 14:07:52,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 203 flow [2023-09-01 14:07:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:07:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:07:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-09-01 14:07:52,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965786901270772 [2023-09-01 14:07:52,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-09-01 14:07:52,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-09-01 14:07:52,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:52,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-09-01 14:07:52,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:52,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:52,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:52,464 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 3 states and 508 transitions. [2023-09-01 14:07:52,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 203 flow [2023-09-01 14:07:52,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 14:07:52,465 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 100 flow [2023-09-01 14:07:52,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-09-01 14:07:52,466 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-09-01 14:07:52,466 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 100 flow [2023-09-01 14:07:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:52,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:52,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:52,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 14:07:52,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:52,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash 610154948, now seen corresponding path program 1 times [2023-09-01 14:07:52,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:52,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069995540] [2023-09-01 14:07:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:52,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069995540] [2023-09-01 14:07:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069995540] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462245588] [2023-09-01 14:07:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:52,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:52,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 14:07:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:52,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:07:52,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:53,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462245588] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:07:53,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:07:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 14:07:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453312222] [2023-09-01 14:07:53,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:07:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 14:07:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 14:07:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-09-01 14:07:53,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 341 [2023-09-01 14:07:53,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 100 flow. Second operand has 12 states, 12 states have (on average 149.33333333333334) internal successors, (1792), 12 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:53,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:53,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 341 [2023-09-01 14:07:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:53,869 INFO L130 PetriNetUnfolder]: 1451/1990 cut-off events. [2023-09-01 14:07:53,869 INFO L131 PetriNetUnfolder]: For 456/458 co-relation queries the response was YES. [2023-09-01 14:07:53,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 1990 events. 1451/1990 cut-off events. For 456/458 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8476 event pairs, 397 based on Foata normal form. 66/1680 useless extension candidates. Maximal degree in co-relation 2520. Up to 758 conditions per place. [2023-09-01 14:07:53,880 INFO L137 encePairwiseOnDemand]: 335/341 looper letters, 80 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-09-01 14:07:53,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 88 transitions, 445 flow [2023-09-01 14:07:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 14:07:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 14:07:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1100 transitions. [2023-09-01 14:07:53,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2023-09-01 14:07:53,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1100 transitions. [2023-09-01 14:07:53,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1100 transitions. [2023-09-01 14:07:53,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:53,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1100 transitions. [2023-09-01 14:07:53,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:53,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:53,892 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:53,892 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 100 flow. Second operand 7 states and 1100 transitions. [2023-09-01 14:07:53,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 88 transitions, 445 flow [2023-09-01 14:07:53,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 88 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 14:07:53,895 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 143 flow [2023-09-01 14:07:53,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-09-01 14:07:53,895 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2023-09-01 14:07:53,896 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 143 flow [2023-09-01 14:07:53,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.33333333333334) internal successors, (1792), 12 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:53,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:53,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:53,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 14:07:54,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:54,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:54,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash -141297123, now seen corresponding path program 1 times [2023-09-01 14:07:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:54,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295176963] [2023-09-01 14:07:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:54,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:54,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295176963] [2023-09-01 14:07:54,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295176963] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522720470] [2023-09-01 14:07:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:54,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:54,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:54,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:54,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 14:07:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:54,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 14:07:54,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:54,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:54,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522720470] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:07:54,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:07:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 14:07:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354498497] [2023-09-01 14:07:54,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:07:54,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 14:07:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 14:07:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-09-01 14:07:54,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 341 [2023-09-01 14:07:54,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 150.58333333333334) internal successors, (1807), 12 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:54,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:54,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 341 [2023-09-01 14:07:54,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:54,868 INFO L130 PetriNetUnfolder]: 942/1371 cut-off events. [2023-09-01 14:07:54,869 INFO L131 PetriNetUnfolder]: For 627/679 co-relation queries the response was YES. [2023-09-01 14:07:54,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 1371 events. 942/1371 cut-off events. For 627/679 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5932 event pairs, 343 based on Foata normal form. 64/1230 useless extension candidates. Maximal degree in co-relation 2541. Up to 612 conditions per place. [2023-09-01 14:07:54,876 INFO L137 encePairwiseOnDemand]: 334/341 looper letters, 70 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-09-01 14:07:54,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 424 flow [2023-09-01 14:07:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 14:07:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 14:07:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1107 transitions. [2023-09-01 14:07:54,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637620444072057 [2023-09-01 14:07:54,880 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1107 transitions. [2023-09-01 14:07:54,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1107 transitions. [2023-09-01 14:07:54,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:54,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1107 transitions. [2023-09-01 14:07:54,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:54,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:54,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:54,888 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 143 flow. Second operand 7 states and 1107 transitions. [2023-09-01 14:07:54,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 424 flow [2023-09-01 14:07:54,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 416 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 14:07:54,893 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 165 flow [2023-09-01 14:07:54,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-09-01 14:07:54,895 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-09-01 14:07:54,895 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 165 flow [2023-09-01 14:07:54,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.58333333333334) internal successors, (1807), 12 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:54,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:54,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:54,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 14:07:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 14:07:55,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:55,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash -990089336, now seen corresponding path program 1 times [2023-09-01 14:07:55,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:55,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122059053] [2023-09-01 14:07:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122059053] [2023-09-01 14:07:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122059053] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761955292] [2023-09-01 14:07:55,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:55,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:55,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:55,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:55,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 14:07:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:55,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:07:55,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:55,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:55,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761955292] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:07:55,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:07:55,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 14:07:55,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768522122] [2023-09-01 14:07:55,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:07:55,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:07:55,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:07:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:07:55,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 341 [2023-09-01 14:07:55,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 165 flow. Second operand has 14 states, 14 states have (on average 149.21428571428572) internal successors, (2089), 14 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:55,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:55,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 341 [2023-09-01 14:07:55,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:56,235 INFO L130 PetriNetUnfolder]: 734/1067 cut-off events. [2023-09-01 14:07:56,235 INFO L131 PetriNetUnfolder]: For 808/841 co-relation queries the response was YES. [2023-09-01 14:07:56,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 1067 events. 734/1067 cut-off events. For 808/841 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4421 event pairs, 271 based on Foata normal form. 33/1031 useless extension candidates. Maximal degree in co-relation 2802. Up to 691 conditions per place. [2023-09-01 14:07:56,241 INFO L137 encePairwiseOnDemand]: 335/341 looper letters, 40 selfloop transitions, 4 changer transitions 25/71 dead transitions. [2023-09-01 14:07:56,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 403 flow [2023-09-01 14:07:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 14:07:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 14:07:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1085 transitions. [2023-09-01 14:07:56,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-09-01 14:07:56,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1085 transitions. [2023-09-01 14:07:56,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1085 transitions. [2023-09-01 14:07:56,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:56,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1085 transitions. [2023-09-01 14:07:56,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 341.0) internal successors, (2728), 8 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,251 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 165 flow. Second operand 7 states and 1085 transitions. [2023-09-01 14:07:56,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 403 flow [2023-09-01 14:07:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 394 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 14:07:56,255 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 140 flow [2023-09-01 14:07:56,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-09-01 14:07:56,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2023-09-01 14:07:56,256 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 140 flow [2023-09-01 14:07:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.21428571428572) internal successors, (2089), 14 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:56,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:56,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 14:07:56,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:56,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:56,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 547279721, now seen corresponding path program 2 times [2023-09-01 14:07:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177622201] [2023-09-01 14:07:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:56,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177622201] [2023-09-01 14:07:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177622201] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078435403] [2023-09-01 14:07:56,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:07:56,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:56,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:56,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:56,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 14:07:56,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:07:56,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:07:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 14:07:56,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:56,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078435403] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:07:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-09-01 14:07:56,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93909367] [2023-09-01 14:07:56,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:07:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:07:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:07:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-09-01 14:07:56,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 341 [2023-09-01 14:07:56,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:56,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 341 [2023-09-01 14:07:56,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:56,973 INFO L130 PetriNetUnfolder]: 751/1009 cut-off events. [2023-09-01 14:07:56,973 INFO L131 PetriNetUnfolder]: For 744/746 co-relation queries the response was YES. [2023-09-01 14:07:56,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 1009 events. 751/1009 cut-off events. For 744/746 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3415 event pairs, 155 based on Foata normal form. 48/1056 useless extension candidates. Maximal degree in co-relation 3082. Up to 583 conditions per place. [2023-09-01 14:07:56,980 INFO L137 encePairwiseOnDemand]: 334/341 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-09-01 14:07:56,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 289 flow [2023-09-01 14:07:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:07:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:07:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 930 transitions. [2023-09-01 14:07:56,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-09-01 14:07:56,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 930 transitions. [2023-09-01 14:07:56,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 930 transitions. [2023-09-01 14:07:56,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:56,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 930 transitions. [2023-09-01 14:07:56,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,991 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 140 flow. Second operand 6 states and 930 transitions. [2023-09-01 14:07:56,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 289 flow [2023-09-01 14:07:56,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 243 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-09-01 14:07:56,996 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 144 flow [2023-09-01 14:07:56,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-09-01 14:07:56,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-09-01 14:07:56,997 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 144 flow [2023-09-01 14:07:56,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:56,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:56,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:57,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 14:07:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:57,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:57,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1381542472, now seen corresponding path program 2 times [2023-09-01 14:07:57,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466547904] [2023-09-01 14:07:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466547904] [2023-09-01 14:07:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466547904] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404595362] [2023-09-01 14:07:57,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:07:57,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:57,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:57,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:57,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 14:07:57,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:07:57,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:07:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:07:57,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:57,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:57,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404595362] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:57,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:07:57,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2023-09-01 14:07:57,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2754243] [2023-09-01 14:07:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:07:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 14:07:57,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 14:07:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-09-01 14:07:57,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 341 [2023-09-01 14:07:57,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 144 flow. Second operand has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:57,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:57,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 341 [2023-09-01 14:07:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:58,170 INFO L130 PetriNetUnfolder]: 947/1306 cut-off events. [2023-09-01 14:07:58,171 INFO L131 PetriNetUnfolder]: For 1389/1577 co-relation queries the response was YES. [2023-09-01 14:07:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 1306 events. 947/1306 cut-off events. For 1389/1577 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4851 event pairs, 242 based on Foata normal form. 202/1419 useless extension candidates. Maximal degree in co-relation 3927. Up to 717 conditions per place. [2023-09-01 14:07:58,179 INFO L137 encePairwiseOnDemand]: 332/341 looper letters, 76 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-09-01 14:07:58,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 88 transitions, 538 flow [2023-09-01 14:07:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 14:07:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 14:07:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1208 transitions. [2023-09-01 14:07:58,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2023-09-01 14:07:58,183 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1208 transitions. [2023-09-01 14:07:58,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1208 transitions. [2023-09-01 14:07:58,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:58,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1208 transitions. [2023-09-01 14:07:58,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:58,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 341.0) internal successors, (3069), 9 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:58,193 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 341.0) internal successors, (3069), 9 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:58,193 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 144 flow. Second operand 8 states and 1208 transitions. [2023-09-01 14:07:58,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 88 transitions, 538 flow [2023-09-01 14:07:58,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 88 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 14:07:58,196 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 208 flow [2023-09-01 14:07:58,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=208, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-09-01 14:07:58,197 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-09-01 14:07:58,199 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 208 flow [2023-09-01 14:07:58,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:58,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:58,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:58,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 14:07:58,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:58,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:58,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1520372626, now seen corresponding path program 3 times [2023-09-01 14:07:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495754743] [2023-09-01 14:07:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:58,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:58,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495754743] [2023-09-01 14:07:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495754743] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671463687] [2023-09-01 14:07:58,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:07:58,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:58,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:58,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 14:07:58,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:07:58,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:07:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:07:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:58,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:07:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:07:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671463687] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:07:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2023-09-01 14:07:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605749122] [2023-09-01 14:07:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:07:58,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 14:07:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:07:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 14:07:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-09-01 14:07:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 341 [2023-09-01 14:07:58,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 208 flow. Second operand has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:58,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:07:58,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 341 [2023-09-01 14:07:58,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:07:59,326 INFO L130 PetriNetUnfolder]: 1354/1861 cut-off events. [2023-09-01 14:07:59,326 INFO L131 PetriNetUnfolder]: For 2964/3192 co-relation queries the response was YES. [2023-09-01 14:07:59,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1861 events. 1354/1861 cut-off events. For 2964/3192 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7039 event pairs, 292 based on Foata normal form. 240/2100 useless extension candidates. Maximal degree in co-relation 6667. Up to 877 conditions per place. [2023-09-01 14:07:59,337 INFO L137 encePairwiseOnDemand]: 331/341 looper letters, 98 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2023-09-01 14:07:59,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 896 flow [2023-09-01 14:07:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 14:07:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 14:07:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1512 transitions. [2023-09-01 14:07:59,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434017595307918 [2023-09-01 14:07:59,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1512 transitions. [2023-09-01 14:07:59,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1512 transitions. [2023-09-01 14:07:59,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:07:59,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1512 transitions. [2023-09-01 14:07:59,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.2) internal successors, (1512), 10 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:59,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:59,350 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:59,350 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 208 flow. Second operand 10 states and 1512 transitions. [2023-09-01 14:07:59,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 896 flow [2023-09-01 14:07:59,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 127 transitions, 873 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 14:07:59,355 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 383 flow [2023-09-01 14:07:59,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=383, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-09-01 14:07:59,355 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2023-09-01 14:07:59,355 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 383 flow [2023-09-01 14:07:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:07:59,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:07:59,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:07:59,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 14:07:59,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:59,562 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:07:59,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:07:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -259531838, now seen corresponding path program 4 times [2023-09-01 14:07:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:07:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476628415] [2023-09-01 14:07:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:07:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:07:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:07:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:59,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:07:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476628415] [2023-09-01 14:07:59,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476628415] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:07:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602532467] [2023-09-01 14:07:59,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:07:59,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:07:59,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:07:59,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:07:59,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 14:07:59,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:07:59,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:07:59,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:07:59,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:07:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:07:59,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:08:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:08:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602532467] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:08:00,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:08:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-09-01 14:08:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981738259] [2023-09-01 14:08:00,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:08:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 14:08:00,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 14:08:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-09-01 14:08:00,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 341 [2023-09-01 14:08:00,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 383 flow. Second operand has 18 states, 18 states have (on average 144.83333333333334) internal successors, (2607), 18 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:00,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:00,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 341 [2023-09-01 14:08:00,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:00,980 INFO L130 PetriNetUnfolder]: 1773/2440 cut-off events. [2023-09-01 14:08:00,981 INFO L131 PetriNetUnfolder]: For 6600/6898 co-relation queries the response was YES. [2023-09-01 14:08:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10465 conditions, 2440 events. 1773/2440 cut-off events. For 6600/6898 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9975 event pairs, 316 based on Foata normal form. 312/2751 useless extension candidates. Maximal degree in co-relation 10429. Up to 1135 conditions per place. [2023-09-01 14:08:01,002 INFO L137 encePairwiseOnDemand]: 330/341 looper letters, 110 selfloop transitions, 51 changer transitions 0/162 dead transitions. [2023-09-01 14:08:01,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 1330 flow [2023-09-01 14:08:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 14:08:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 14:08:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1523 transitions. [2023-09-01 14:08:01,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466275659824047 [2023-09-01 14:08:01,007 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1523 transitions. [2023-09-01 14:08:01,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1523 transitions. [2023-09-01 14:08:01,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:08:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1523 transitions. [2023-09-01 14:08:01,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.3) internal successors, (1523), 10 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:01,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:01,016 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 341.0) internal successors, (3751), 11 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:01,016 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 383 flow. Second operand 10 states and 1523 transitions. [2023-09-01 14:08:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 1330 flow [2023-09-01 14:08:01,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 1269 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-09-01 14:08:01,054 INFO L231 Difference]: Finished difference. Result has 69 places, 90 transitions, 794 flow [2023-09-01 14:08:01,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=794, PETRI_PLACES=69, PETRI_TRANSITIONS=90} [2023-09-01 14:08:01,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2023-09-01 14:08:01,055 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 90 transitions, 794 flow [2023-09-01 14:08:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 144.83333333333334) internal successors, (2607), 18 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:01,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:08:01,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:08:01,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 14:08:01,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:01,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:08:01,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:08:01,263 INFO L85 PathProgramCache]: Analyzing trace with hash 111750626, now seen corresponding path program 5 times [2023-09-01 14:08:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:08:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144289483] [2023-09-01 14:08:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:01,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:08:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:08:01,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144289483] [2023-09-01 14:08:01,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144289483] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:01,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61416645] [2023-09-01 14:08:01,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:08:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:01,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:08:01,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:08:01,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 14:08:01,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:08:01,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:08:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:08:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:08:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:08:01,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:08:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:08:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61416645] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:08:01,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:08:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-09-01 14:08:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118492605] [2023-09-01 14:08:01,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:08:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 14:08:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 14:08:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-09-01 14:08:02,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 341 [2023-09-01 14:08:02,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 90 transitions, 794 flow. Second operand has 15 states, 15 states have (on average 140.86666666666667) internal successors, (2113), 15 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:02,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:02,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 341 [2023-09-01 14:08:02,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:02,902 INFO L130 PetriNetUnfolder]: 2124/2936 cut-off events. [2023-09-01 14:08:02,903 INFO L131 PetriNetUnfolder]: For 11245/11245 co-relation queries the response was YES. [2023-09-01 14:08:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14382 conditions, 2936 events. 2124/2936 cut-off events. For 11245/11245 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11868 event pairs, 72 based on Foata normal form. 16/2952 useless extension candidates. Maximal degree in co-relation 14340. Up to 1249 conditions per place. [2023-09-01 14:08:02,933 INFO L137 encePairwiseOnDemand]: 329/341 looper letters, 144 selfloop transitions, 105 changer transitions 0/249 dead transitions. [2023-09-01 14:08:02,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 249 transitions, 2475 flow [2023-09-01 14:08:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 14:08:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 14:08:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2351 transitions. [2023-09-01 14:08:02,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309017595307918 [2023-09-01 14:08:02,940 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2351 transitions. [2023-09-01 14:08:02,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2351 transitions. [2023-09-01 14:08:02,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:08:02,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2351 transitions. [2023-09-01 14:08:02,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 146.9375) internal successors, (2351), 16 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:02,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 341.0) internal successors, (5797), 17 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:02,983 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 341.0) internal successors, (5797), 17 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:02,983 INFO L175 Difference]: Start difference. First operand has 69 places, 90 transitions, 794 flow. Second operand 16 states and 2351 transitions. [2023-09-01 14:08:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 249 transitions, 2475 flow [2023-09-01 14:08:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 249 transitions, 2432 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-09-01 14:08:03,024 INFO L231 Difference]: Finished difference. Result has 89 places, 149 transitions, 1706 flow [2023-09-01 14:08:03,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1706, PETRI_PLACES=89, PETRI_TRANSITIONS=149} [2023-09-01 14:08:03,026 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2023-09-01 14:08:03,027 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 149 transitions, 1706 flow [2023-09-01 14:08:03,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 140.86666666666667) internal successors, (2113), 15 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:08:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:08:03,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 14:08:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 14:08:03,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:08:03,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:08:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2132688008, now seen corresponding path program 6 times [2023-09-01 14:08:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:08:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826691606] [2023-09-01 14:08:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:08:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:03,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:08:03,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826691606] [2023-09-01 14:08:03,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826691606] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597140225] [2023-09-01 14:08:03,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:08:03,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:03,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:08:03,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:08:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 14:08:03,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 14:08:03,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:08:03,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:08:03,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:08:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:03,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:08:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:03,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597140225] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:03,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:08:03,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-09-01 14:08:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003232467] [2023-09-01 14:08:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:08:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 14:08:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 14:08:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:08:03,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 341 [2023-09-01 14:08:03,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 149 transitions, 1706 flow. Second operand has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:03,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:03,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 341 [2023-09-01 14:08:03,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:04,322 INFO L130 PetriNetUnfolder]: 2056/2828 cut-off events. [2023-09-01 14:08:04,323 INFO L131 PetriNetUnfolder]: For 13548/13666 co-relation queries the response was YES. [2023-09-01 14:08:04,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 2828 events. 2056/2828 cut-off events. For 13548/13666 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11377 event pairs, 270 based on Foata normal form. 132/2960 useless extension candidates. Maximal degree in co-relation 15098. Up to 1119 conditions per place. [2023-09-01 14:08:04,375 INFO L137 encePairwiseOnDemand]: 331/341 looper letters, 130 selfloop transitions, 71 changer transitions 0/207 dead transitions. [2023-09-01 14:08:04,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 207 transitions, 2433 flow [2023-09-01 14:08:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:08:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:08:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1368 transitions. [2023-09-01 14:08:04,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44574780058651026 [2023-09-01 14:08:04,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1368 transitions. [2023-09-01 14:08:04,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1368 transitions. [2023-09-01 14:08:04,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:08:04,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1368 transitions. [2023-09-01 14:08:04,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:04,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 341.0) internal successors, (3410), 10 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:04,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 341.0) internal successors, (3410), 10 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:04,387 INFO L175 Difference]: Start difference. First operand has 89 places, 149 transitions, 1706 flow. Second operand 9 states and 1368 transitions. [2023-09-01 14:08:04,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 207 transitions, 2433 flow [2023-09-01 14:08:04,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 207 transitions, 2400 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-09-01 14:08:04,436 INFO L231 Difference]: Finished difference. Result has 96 places, 151 transitions, 1893 flow [2023-09-01 14:08:04,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1893, PETRI_PLACES=96, PETRI_TRANSITIONS=151} [2023-09-01 14:08:04,439 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2023-09-01 14:08:04,439 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 151 transitions, 1893 flow [2023-09-01 14:08:04,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:04,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:08:04,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:08:04,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 14:08:04,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:04,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:08:04,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:08:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1095595526, now seen corresponding path program 7 times [2023-09-01 14:08:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:08:04,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908082649] [2023-09-01 14:08:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:08:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:04,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:08:04,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908082649] [2023-09-01 14:08:04,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908082649] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:04,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529137917] [2023-09-01 14:08:04,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:08:04,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:04,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:08:04,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:08:04,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 14:08:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 14:08:04,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:08:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:05,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:08:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:08:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529137917] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:08:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-09-01 14:08:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753170158] [2023-09-01 14:08:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:08:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 14:08:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 14:08:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:08:05,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 341 [2023-09-01 14:08:05,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 151 transitions, 1893 flow. Second operand has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:05,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:05,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 341 [2023-09-01 14:08:05,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:05,735 INFO L130 PetriNetUnfolder]: 2020/2772 cut-off events. [2023-09-01 14:08:05,735 INFO L131 PetriNetUnfolder]: For 16622/16734 co-relation queries the response was YES. [2023-09-01 14:08:05,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15837 conditions, 2772 events. 2020/2772 cut-off events. For 16622/16734 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10995 event pairs, 302 based on Foata normal form. 126/2898 useless extension candidates. Maximal degree in co-relation 15783. Up to 1096 conditions per place. [2023-09-01 14:08:05,758 INFO L137 encePairwiseOnDemand]: 331/341 looper letters, 95 selfloop transitions, 102 changer transitions 0/203 dead transitions. [2023-09-01 14:08:05,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 203 transitions, 2568 flow [2023-09-01 14:08:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:08:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:08:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1363 transitions. [2023-09-01 14:08:05,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444118605408928 [2023-09-01 14:08:05,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1363 transitions. [2023-09-01 14:08:05,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1363 transitions. [2023-09-01 14:08:05,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:08:05,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1363 transitions. [2023-09-01 14:08:05,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.44444444444446) internal successors, (1363), 9 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:05,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 341.0) internal successors, (3410), 10 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:05,772 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 341.0) internal successors, (3410), 10 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:05,772 INFO L175 Difference]: Start difference. First operand has 96 places, 151 transitions, 1893 flow. Second operand 9 states and 1363 transitions. [2023-09-01 14:08:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 203 transitions, 2568 flow [2023-09-01 14:08:05,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 203 transitions, 2553 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 14:08:05,832 INFO L231 Difference]: Finished difference. Result has 103 places, 153 transitions, 2192 flow [2023-09-01 14:08:05,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2192, PETRI_PLACES=103, PETRI_TRANSITIONS=153} [2023-09-01 14:08:05,832 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 71 predicate places. [2023-09-01 14:08:05,833 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 153 transitions, 2192 flow [2023-09-01 14:08:05,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.875) internal successors, (1159), 8 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:05,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:08:05,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:08:05,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 14:08:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 14:08:06,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:08:06,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:08:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1081782259, now seen corresponding path program 1 times [2023-09-01 14:08:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:08:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160615260] [2023-09-01 14:08:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:08:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:08:06,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:08:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160615260] [2023-09-01 14:08:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160615260] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:08:06,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:08:06,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 14:08:06,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352124101] [2023-09-01 14:08:06,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:08:06,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 14:08:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 14:08:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 14:08:06,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-09-01 14:08:06,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 153 transitions, 2192 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:06,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:06,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-09-01 14:08:06,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:06,519 INFO L130 PetriNetUnfolder]: 1876/2602 cut-off events. [2023-09-01 14:08:06,519 INFO L131 PetriNetUnfolder]: For 25072/25806 co-relation queries the response was YES. [2023-09-01 14:08:06,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16315 conditions, 2602 events. 1876/2602 cut-off events. For 25072/25806 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11346 event pairs, 464 based on Foata normal form. 436/2943 useless extension candidates. Maximal degree in co-relation 16258. Up to 1644 conditions per place. [2023-09-01 14:08:06,541 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 166 selfloop transitions, 3 changer transitions 0/194 dead transitions. [2023-09-01 14:08:06,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 194 transitions, 3059 flow [2023-09-01 14:08:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 14:08:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 14:08:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-09-01 14:08:06,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49853372434017595 [2023-09-01 14:08:06,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-09-01 14:08:06,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-09-01 14:08:06,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:08:06,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-09-01 14:08:06,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:06,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:06,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:06,547 INFO L175 Difference]: Start difference. First operand has 103 places, 153 transitions, 2192 flow. Second operand 3 states and 510 transitions. [2023-09-01 14:08:06,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 194 transitions, 3059 flow [2023-09-01 14:08:06,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 194 transitions, 2924 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-09-01 14:08:06,591 INFO L231 Difference]: Finished difference. Result has 100 places, 153 transitions, 2093 flow [2023-09-01 14:08:06,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2093, PETRI_PLACES=100, PETRI_TRANSITIONS=153} [2023-09-01 14:08:06,592 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2023-09-01 14:08:06,592 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 153 transitions, 2093 flow [2023-09-01 14:08:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:06,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:08:06,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:08:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 14:08:06,593 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:08:06,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:08:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2072266448, now seen corresponding path program 1 times [2023-09-01 14:08:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:08:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078551178] [2023-09-01 14:08:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:08:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:08:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:08:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078551178] [2023-09-01 14:08:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078551178] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:08:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381227991] [2023-09-01 14:08:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:08:09,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:08:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:08:09,889 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:08:09,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 14:08:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:08:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 51 conjunts are in the unsatisfiable core [2023-09-01 14:08:10,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:08:10,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 14:08:10,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 14:08:10,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:08:10,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:08:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:08:10,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:08:11,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:08:11,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:08:11,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 52 [2023-09-01 14:08:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:08:11,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:08:12,836 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_~A~0.offset 4 (* c_thread1Thread1of1ForFork0_~i~0 4))) (.cse10 (* 4 c_~M~0))) (let ((.cse1 (= (mod c_~sorted3~0 256) 0)) (.cse2 (<= c_~N~0 (+ c_~M~0 1))) (.cse3 (< (+ 2 c_~M~0) c_~N~0)) (.cse8 (+ c_~A~0.offset .cse10)) (.cse7 (+ c_~A~0.offset .cse10 4)) (.cse4 (= (mod c_~sorted2~0 256) 0)) (.cse0 (forall ((v_ArrVal_587 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_587) c_~A~0.base) .cse6) |c_thread1Thread1of1ForFork0_#t~mem2|)))) (and (or .cse0 (not .cse1) .cse2 .cse3) (or .cse1 .cse2 .cse3 .cse4 (forall ((v_ArrVal_587 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_587) c_~A~0.base))) (or (< |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse5 .cse6)) (<= (select .cse5 .cse7) (select .cse5 .cse8)))))) (or .cse2 .cse3 (and (forall ((v_ArrVal_587 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_587) c_~A~0.base))) (or (<= (select .cse9 .cse6) |c_thread1Thread1of1ForFork0_#t~mem2|) (< (select .cse9 .cse8) (select .cse9 .cse7))))) (or (not .cse4) .cse0)))))) is different from false [2023-09-01 14:08:19,151 WARN L222 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:08:20,469 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((~M~0 Int) (v_ArrVal_586 (Array Int Int)) (v_ArrVal_585 (Array Int Int)) (v_ArrVal_587 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_585))) (let ((.cse0 (select (store (store .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_586) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_587) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< 0 ~M~0) (let ((.cse1 (* ~M~0 4))) (< (select .cse0 (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 (+ .cse1 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (< (+ 2 ~M~0) c_~N~0) (<= (select .cse0 .cse2) (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (<= c_~N~0 (+ ~M~0 1)))))) (forall ((~M~0 Int) (v_ArrVal_586 (Array Int Int)) (v_ArrVal_585 (Array Int Int)) (v_ArrVal_587 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_585))) (let ((.cse5 (select (store (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_586) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_587) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (< 0 ~M~0) (< (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse5 .cse2)) (< (+ 2 ~M~0) c_~N~0) (let ((.cse6 (* ~M~0 4))) (<= (select .cse5 (+ .cse6 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse5 (+ .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (<= c_~N~0 (+ ~M~0 1)))))))) is different from false [2023-09-01 14:08:20,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:08:20,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2023-09-01 14:08:20,544 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-09-01 14:08:20,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 515 treesize of output 480 [2023-09-01 14:08:20,588 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-09-01 14:08:20,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 314 treesize of output 254 [2023-09-01 14:08:20,612 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-09-01 14:08:20,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 220 [2023-09-01 14:08:20,654 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-09-01 14:08:20,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 118 treesize of output 119 [2023-09-01 14:08:21,233 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 14:08:21,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 1 [2023-09-01 14:08:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-09-01 14:08:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381227991] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:08:21,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:08:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 41 [2023-09-01 14:08:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127033824] [2023-09-01 14:08:21,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:08:21,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-09-01 14:08:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:08:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-09-01 14:08:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1464, Unknown=13, NotChecked=158, Total=1806 [2023-09-01 14:08:21,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 341 [2023-09-01 14:08:21,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 153 transitions, 2093 flow. Second operand has 43 states, 43 states have (on average 86.74418604651163) internal successors, (3730), 43 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:08:21,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:08:21,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 341 [2023-09-01 14:08:21,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:08:54,887 WARN L222 SmtUtils]: Spent 24.72s on a formula simplification. DAG size of input: 136 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:09:18,011 WARN L222 SmtUtils]: Spent 19.16s on a formula simplification. DAG size of input: 143 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:10:26,661 WARN L222 SmtUtils]: Spent 29.38s on a formula simplification. DAG size of input: 162 DAG size of output: 130 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:11:09,775 WARN L222 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 139 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:11:31,437 WARN L222 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 192 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:11:33,529 INFO L130 PetriNetUnfolder]: 6133/8833 cut-off events. [2023-09-01 14:11:33,529 INFO L131 PetriNetUnfolder]: For 70049/70049 co-relation queries the response was YES. [2023-09-01 14:11:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51119 conditions, 8833 events. 6133/8833 cut-off events. For 70049/70049 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 46620 event pairs, 121 based on Foata normal form. 7/8840 useless extension candidates. Maximal degree in co-relation 51063. Up to 3586 conditions per place. [2023-09-01 14:11:33,639 INFO L137 encePairwiseOnDemand]: 323/341 looper letters, 609 selfloop transitions, 505 changer transitions 42/1156 dead transitions. [2023-09-01 14:11:33,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1156 transitions, 14436 flow [2023-09-01 14:11:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-09-01 14:11:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-09-01 14:11:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 7570 transitions. [2023-09-01 14:11:33,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2740668332066182 [2023-09-01 14:11:33,657 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 7570 transitions. [2023-09-01 14:11:33,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 7570 transitions. [2023-09-01 14:11:33,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:11:33,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 7570 transitions. [2023-09-01 14:11:33,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 93.45679012345678) internal successors, (7570), 81 states have internal predecessors, (7570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:11:33,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 341.0) internal successors, (27962), 82 states have internal predecessors, (27962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:11:33,714 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 341.0) internal successors, (27962), 82 states have internal predecessors, (27962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:11:33,715 INFO L175 Difference]: Start difference. First operand has 100 places, 153 transitions, 2093 flow. Second operand 81 states and 7570 transitions. [2023-09-01 14:11:33,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1156 transitions, 14436 flow [2023-09-01 14:11:33,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1156 transitions, 14427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 14:11:33,944 INFO L231 Difference]: Finished difference. Result has 204 places, 646 transitions, 10231 flow [2023-09-01 14:11:33,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=10231, PETRI_PLACES=204, PETRI_TRANSITIONS=646} [2023-09-01 14:11:33,945 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2023-09-01 14:11:33,945 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 646 transitions, 10231 flow [2023-09-01 14:11:33,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 86.74418604651163) internal successors, (3730), 43 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:11:33,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:11:33,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:11:33,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 14:11:34,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 14:11:34,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:11:34,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:11:34,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1236109612, now seen corresponding path program 2 times [2023-09-01 14:11:34,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:11:34,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22636875] [2023-09-01 14:11:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:11:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:11:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:11:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:11:36,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:11:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22636875] [2023-09-01 14:11:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22636875] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:11:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376773200] [2023-09-01 14:11:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:11:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:11:36,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:11:36,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:11:36,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 14:11:36,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:11:36,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:11:36,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 14:11:36,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:11:37,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:11:37,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:11:37,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 52 [2023-09-01 14:11:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:11:37,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:11:38,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:11:38,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 79 [2023-09-01 14:11:38,855 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-09-01 14:11:38,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 1 [2023-09-01 14:11:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:11:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376773200] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:11:39,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:11:39,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-09-01 14:11:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184861045] [2023-09-01 14:11:39,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:11:39,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-09-01 14:11:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:11:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-09-01 14:11:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2023-09-01 14:11:42,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 341 [2023-09-01 14:11:42,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 646 transitions, 10231 flow. Second operand has 38 states, 38 states have (on average 121.97368421052632) internal successors, (4635), 38 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:11:42,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:11:42,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 341 [2023-09-01 14:11:42,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:12:09,349 INFO L130 PetriNetUnfolder]: 12320/17724 cut-off events. [2023-09-01 14:12:09,349 INFO L131 PetriNetUnfolder]: For 180393/180393 co-relation queries the response was YES. [2023-09-01 14:12:09,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117498 conditions, 17724 events. 12320/17724 cut-off events. For 180393/180393 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 102300 event pairs, 154 based on Foata normal form. 386/18110 useless extension candidates. Maximal degree in co-relation 117413. Up to 6989 conditions per place. [2023-09-01 14:12:09,515 INFO L137 encePairwiseOnDemand]: 322/341 looper letters, 823 selfloop transitions, 1275 changer transitions 51/2149 dead transitions. [2023-09-01 14:12:09,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 2149 transitions, 31039 flow [2023-09-01 14:12:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-09-01 14:12:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-09-01 14:12:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 13342 transitions. [2023-09-01 14:12:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835892128112242 [2023-09-01 14:12:09,531 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 13342 transitions. [2023-09-01 14:12:09,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 13342 transitions. [2023-09-01 14:12:09,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:12:09,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 13342 transitions. [2023-09-01 14:12:09,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 130.80392156862746) internal successors, (13342), 102 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:12:09,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 341.0) internal successors, (35123), 103 states have internal predecessors, (35123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:12:09,585 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 341.0) internal successors, (35123), 103 states have internal predecessors, (35123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:12:09,585 INFO L175 Difference]: Start difference. First operand has 204 places, 646 transitions, 10231 flow. Second operand 102 states and 13342 transitions. [2023-09-01 14:12:09,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 2149 transitions, 31039 flow [2023-09-01 14:12:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 2149 transitions, 28973 flow, removed 980 selfloop flow, removed 4 redundant places. [2023-09-01 14:12:10,545 INFO L231 Difference]: Finished difference. Result has 356 places, 1489 transitions, 24596 flow [2023-09-01 14:12:10,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=8018, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=24596, PETRI_PLACES=356, PETRI_TRANSITIONS=1489} [2023-09-01 14:12:10,546 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 324 predicate places. [2023-09-01 14:12:10,546 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1489 transitions, 24596 flow [2023-09-01 14:12:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 121.97368421052632) internal successors, (4635), 38 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:12:10,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:12:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:12:10,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 14:12:10,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 14:12:10,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:12:10,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:12:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1304888468, now seen corresponding path program 3 times [2023-09-01 14:12:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:12:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608608296] [2023-09-01 14:12:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:12:10,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:12:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:12:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:12:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:12:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608608296] [2023-09-01 14:12:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608608296] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:12:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799686738] [2023-09-01 14:12:12,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:12:12,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:12:12,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:12:12,733 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:12:12,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 14:12:12,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:12:12,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:12:12,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 50 conjunts are in the unsatisfiable core [2023-09-01 14:12:12,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:12:12,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 14:12:13,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 14:12:13,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 14:12:13,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:12:13,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 14:12:13,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 14:12:13,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:12:13,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 52 [2023-09-01 14:12:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:12:13,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:12:18,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 14:12:18,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 79 [2023-09-01 14:12:18,120 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-09-01 14:12:18,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 823 treesize of output 776 [2023-09-01 14:12:18,154 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-09-01 14:12:18,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 318 treesize of output 258 [2023-09-01 14:12:18,195 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-09-01 14:12:18,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 250 treesize of output 234 [2023-09-01 14:12:18,240 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2023-09-01 14:12:18,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 119 [2023-09-01 14:12:18,911 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-09-01 14:12:18,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 1 [2023-09-01 14:12:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:12:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799686738] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:12:19,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:12:19,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 38 [2023-09-01 14:12:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528239026] [2023-09-01 14:12:19,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:12:19,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 14:12:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:12:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 14:12:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1365, Unknown=31, NotChecked=0, Total=1560 [2023-09-01 14:12:22,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 341 [2023-09-01 14:12:22,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1489 transitions, 24596 flow. Second operand has 40 states, 40 states have (on average 86.825) internal successors, (3473), 40 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:12:22,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:12:22,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 341 [2023-09-01 14:12:22,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:12:41,945 WARN L222 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 113 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:12:57,310 WARN L222 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 146 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:13:03,625 WARN L222 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 78 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:13:25,814 WARN L222 SmtUtils]: Spent 17.29s on a formula simplification that was a NOOP. DAG size: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:13:35,987 WARN L222 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:14:06,535 WARN L222 SmtUtils]: Spent 15.98s on a formula simplification. DAG size of input: 124 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:14:34,683 WARN L222 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 140 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:14:58,471 WARN L222 SmtUtils]: Spent 23.12s on a formula simplification. DAG size of input: 137 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:15:06,721 WARN L222 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 150 DAG size of output: 103 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:15:18,228 WARN L222 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 211 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:15:32,831 WARN L222 SmtUtils]: Spent 14.08s on a formula simplification. DAG size of input: 153 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:15:48,988 WARN L222 SmtUtils]: Spent 14.40s on a formula simplification. DAG size of input: 155 DAG size of output: 152 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:15:55,378 WARN L222 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 135 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:16:04,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:16:10,884 WARN L222 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 144 DAG size of output: 126 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:16:23,197 WARN L222 SmtUtils]: Spent 11.15s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:16:36,900 WARN L222 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 224 DAG size of output: 146 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:16:55,911 WARN L222 SmtUtils]: Spent 13.63s on a formula simplification. DAG size of input: 168 DAG size of output: 165 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:17:03,497 WARN L222 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 177 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:17:28,047 WARN L222 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 157 DAG size of output: 139 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:17:36,991 WARN L222 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:17:51,212 WARN L222 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 179 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:17:53,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:18:13,513 WARN L222 SmtUtils]: Spent 11.62s on a formula simplification. DAG size of input: 133 DAG size of output: 120 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:18:33,930 WARN L222 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 131 DAG size of output: 81 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:18:50,104 WARN L222 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 204 DAG size of output: 130 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:19:14,907 WARN L222 SmtUtils]: Spent 24.42s on a formula simplification. DAG size of input: 146 DAG size of output: 130 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:19:24,220 WARN L222 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 165 DAG size of output: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:19:46,845 WARN L222 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 217 DAG size of output: 142 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:19:57,061 WARN L222 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 174 DAG size of output: 156 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:20:18,972 WARN L222 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 187 DAG size of output: 169 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:20:32,429 WARN L222 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:20:49,409 WARN L222 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 195 DAG size of output: 144 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:21:00,003 WARN L222 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 153 DAG size of output: 151 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 14:21:11,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 14:21:18,617 WARN L222 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 169 DAG size of output: 145 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15